James Williamson
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Born : 1991
Cat. M35 Ultrarunner since 2018
12
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
25
DUV-index+ ?Largest integer N such that the race distances provide at least N complete segments of N km in total. A single long race may therefore contribute several segments. See the DUV-Index tab for the detailed calculation. calculation details
1
Countries visited ?United States
United States8,3%
Rank quotient ?This runner's calculation uses 13 eligible race(s): Σ(rank − 1) = 122; Σ finishers = 1 475. 122 / 1 475 × 100 = 8.27%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed13
Km — ultra races850 km
> 100 km1
Longest race105,0 km
3rd Crested Butte 105 km Ultra — 28/9/2019
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Trail100,0%
Wins & podiums (ultra)
🏆 Win1
🏆 Win M1
🏅 Top 32
🏅 Top 3 M2
Longest winning streak1
Current streak0
HISTORY
13 race(s)| Date | Race | Perf. | Rk | |
|---|---|---|---|---|
| 2025 | ||||
| 26.04 | 50km | 4th Royal Gorge Groove |
5:18:02 h | 11 |
| 2024 | ||||
| 07.09 | 50km | 5th Megunticook 50km Race |
6:20:47 h | 19 |
| 07.09 | 50km | 11th Devil on the Divide Ultra |
6:20:47 h | 19 |
| 2023 | ||||
| 26.08 | 50km | 8th Continental Divide Trail Run |
4:58:16 h | 7 |
| 2022 | ||||
| 15.10 | 50km | 15th Sage Burner Trail Run |
4:35:52 h | 1 🏆 |
| 2021 | ||||
| 31.07 | 100km | 7th Tushars 100km Mountain Runs |
16:24:06 h | 13 |
| 2020 | ||||
| 25.07 | 100km | 6th Never Summer 100k |
12:55:03 h | 4 |
| 27.06 | 50km | 1st Bears Ears 50 km Ultra Race |
5:47:26 h | 4 |
| 2019 | ||||
| 28.09 | 105km | 3rd Crested Butte 105 km Ultra |
13:59:25 h | 2 🥈 |
| 31.08 | 65km | 6th Grand Traverse Mountain Run |
6:54:10 h | 10 |
| 13.07 | 50km | 7th Power of Four Trail Run |
6:42:55 h | 13 |
| 11.05 | 50mi | 8th Quad Rock 50 Mile |
10:25:56 h | 23 |
| 2018 | ||||
| 27.10 | 50km | 11th Sage Burner Trail Run |
4:33:47 h | 9 |
| Runner | Races in common |
|---|---|
DUV-index calculation details
| # | Date | Race | Credited km | DUV-index+ |
|---|---|---|---|---|
| ✓ 1 | 28/9/2019 | 3rd Crested Butte 105 km Ultra | 105,00 | ×4 |
| ✓ 2 | 31/7/2021 | 7th Tushars 100km Mountain Runs | 100,00 | ×4 |
| ✓ 3 | 25/7/2020 | 6th Never Summer 100k | 100,00 | ×4 |
| ✓ 4 | 11/5/2019 | 8th Quad Rock 50 Mile | 80,47 | ×3 |
| ✓ 5 | 31/8/2019 | 6th Grand Traverse Mountain Run | 65,00 | ×2 |
| ✓ 6 | 26/4/2025 | 4th Royal Gorge Groove | 50,00 | ×2 |
| ✓ 7 | 7/9/2024 | 5th Megunticook 50km Race | 50,00 | ×2 |
| ✓ 8 | 26/8/2023 | 8th Continental Divide Trail Run | 50,00 | ×2 |
| ✓ 9 | 15/10/2022 | 15th Sage Burner Trail Run | 50,00 | ×2 |
| ✓ 10 | 27/6/2020 | 1st Bears Ears 50 km Ultra Race | 50,00 | ×2 |
| ✓ 11 | 13/7/2019 | 7th Power of Four Trail Run | 50,00 | ×2 |
| ✓ 12 | 27/10/2018 | 11th Sage Burner Trail Run | 50,00 | ×2 |